Methodology and Rationale for Ophthalmic Examinations in the Seventh and Eighth Korea National Health and Nutrition Examination Surveys (2017–2021)

This report provides a detailed description of the methodology for ophthalmic examinations according to the Korea National Health and Nutrition Examination Survey (KNHANES) VII and VIII (from 2017 to 2021). The KNHANES is a nationwide survey which has been performed since 1998 in representatives of...

Full description

Saved in:
Bibliographic Details
Published inKorean journal of ophthalmology Vol. 35; no. 4; pp. 295 - 303
Main Authors Song, Su Jeong, Choi, Kyung Seek, Han, Jong Chul, Jee, Donghyun, Jeoung, Jin Wook, Jo, Young Joon, Kim, Jae Yong, Kim, Ko Eun, Kim, Seong Taeck, Lee, Ji Woong, Lee, Tae Eun, Lim, Dong Hui, Kim, Chan Yun, Kim, Hyun Woong, Park, Sang Woo, Park, Ki Ho, Park, Sang Jun, Sagong, Min, Shin, Jae Pil, Yoo, Chungkwon, Kim, Yoonjung, Oh, Kyungwon, Park, Kyu Hyung
Format Journal Article
LanguageEnglish
Published Korean Ophthalmological Society 01.08.2021
대한안과학회
Subjects
Online AccessGet full text
ISSN1011-8942
2092-9382
2092-9382
DOI10.3341/kjo.2021.0016

Cover

Abstract This report provides a detailed description of the methodology for ophthalmic examinations according to the Korea National Health and Nutrition Examination Survey (KNHANES) VII and VIII (from 2017 to 2021). The KNHANES is a nationwide survey which has been performed since 1998 in representatives of whole Korean population. During the KNHANES VII and VIII, in addition to the ophthalmic questionnaire, intraocular pressure measurement, visual field test, auto refractometry, axial length and optical coherence tomography measurements were included. This new survey will provide not only provide normative and pathologic ophthalmic data including intraocular pressure, refractive error, axial length, visual field and precise measurement of anterior segment, macula and optic nerve with optical coherence tomography, but also a more accurate diagnosis for major adult blindness diseases, including age-related macular degeneration, diabetic retinopathy, glaucoma, and other ocular diseases, for the national Korean population.
AbstractList This report provides a detailed description of the methodology for ophthalmic examinations according to the Korea National Health and Nutrition Examination Survey (KNHANES) VII and VIII (from 2017 to 2021). The KNHANES is a nationwide survey which has been performed since 1998 in representatives of whole Korean population. During the KNHANES VII and VIII, in addition to the ophthalmic questionnaire, intraocular pressure measurement, visual field test, auto refractometry, axial length and optical coherence tomography measurements were included. This new survey will provide not only provide normative and pathologic ophthalmic data including intraocular pressure, refractive error, axial length, visual field and precise measurement of anterior segment, macula and optic nerve with optical coherence tomography, but also a more accurate diagnosis for major adult blindness diseases, including age-related macular degeneration, diabetic retinopathy, glaucoma, and other ocular diseases, for the national Korean population.
This report provides a detailed description of the methodology for ophthalmic examinations according to the Korea NationalHealth and Nutrition Examination Survey (KNHANES) VII and VIII (from 2017 to 2021). The KNHANES is a nationwide surveywhich has been performed since 1998 in representatives of whole Korean population. During the KNHANES VII and VIII, in additionto the ophthalmic questionnaire, intraocular pressure measurement, visual field test, auto refractometry, axial length and optical coherence tomography measurements were included. This new survey will provide not only provide normativeand pathologic ophthalmic data including intraocular pressure, refractive error, axial length, visual field and precise measurementof anterior segment, macula and optic nerve with optical coherence tomography, but also a more accurate diagnosisfor major adult blindness diseases, including age-related macular degeneration, diabetic retinopathy, glaucoma, and otherocular diseases, for the national Korean population. KCI Citation Count: 0
This report provides a detailed description of the methodology for ophthalmic examinations according to the Korea National Health and Nutrition Examination Survey (KNHANES) VII and VIII (from 2017 to 2021). The KNHANES is a nationwide survey which has been performed since 1998 in representatives of whole Korean population. During the KNHANES VII and VIII, in addition to the ophthalmic questionnaire, intraocular pressure measurement, visual field test, auto refractometry, axial length and optical coherence tomography measurements were included. This new survey will provide not only provide normative and pathologic ophthalmic data including intraocular pressure, refractive error, axial length, visual field and precise measurement of anterior segment, macula and optic nerve with optical coherence tomography, but also a more accurate diagnosis for major adult blindness diseases, including age-related macular degeneration, diabetic retinopathy, glaucoma, and other ocular diseases, for the national Korean population.This report provides a detailed description of the methodology for ophthalmic examinations according to the Korea National Health and Nutrition Examination Survey (KNHANES) VII and VIII (from 2017 to 2021). The KNHANES is a nationwide survey which has been performed since 1998 in representatives of whole Korean population. During the KNHANES VII and VIII, in addition to the ophthalmic questionnaire, intraocular pressure measurement, visual field test, auto refractometry, axial length and optical coherence tomography measurements were included. This new survey will provide not only provide normative and pathologic ophthalmic data including intraocular pressure, refractive error, axial length, visual field and precise measurement of anterior segment, macula and optic nerve with optical coherence tomography, but also a more accurate diagnosis for major adult blindness diseases, including age-related macular degeneration, diabetic retinopathy, glaucoma, and other ocular diseases, for the national Korean population.
Author Kim, Ko Eun
Han, Jong Chul
Kim, Jae Yong
Kim, Hyun Woong
Jeoung, Jin Wook
Lim, Dong Hui
Park, Kyu Hyung
Kim, Seong Taeck
Park, Ki Ho
Park, Sang Jun
Lee, Ji Woong
Song, Su Jeong
Shin, Jae Pil
Kim, Chan Yun
Kim, Yoonjung
Choi, Kyung Seek
Oh, Kyungwon
Jo, Young Joon
Yoo, Chungkwon
Lee, Tae Eun
Park, Sang Woo
Sagong, Min
Jee, Donghyun
AuthorAffiliation 2 Department of Ophthalmology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
8 Department of Ophthalmology, Ajou University Medical Center, Ajou University School of Medicine, Suwon, Korea
16 Department of Ophthalmology, Yeungnam University Hospital, Yeungnam University College of Medicine, Daegu, Korea
19 Division of Health and Nutrition Survey and Analysis, Korea Disease Control and Prevention Agency, Cheongju, Korea
18 Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
4 Department of Ophthalmology, St. Vincent’s Hospital, The Catholic University of Korea College of Medicine, Suwon, Korea
13 Department of Ophthalmology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea
7 Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
15 Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of M
AuthorAffiliation_xml – name: 3 Department of Ophthalmology, Samsung Medical Center, Sungkyunkwan University School of Medicine, Seoul, Korea
– name: 6 Department of Ophthalmology, Chungnam National University Hospital, Daejon, Korea
– name: 14 Department of Ophthalmology, Chonnam National University Medical School, Gwangju, Korea
– name: 16 Department of Ophthalmology, Yeungnam University Hospital, Yeungnam University College of Medicine, Daegu, Korea
– name: 2 Department of Ophthalmology, Soonchunhyang University Seoul Hospital, Soonchunhyang University College of Medicine, Seoul, Korea
– name: 8 Department of Ophthalmology, Ajou University Medical Center, Ajou University School of Medicine, Suwon, Korea
– name: 11 Department of Ophthalmology, Jeonbuk National University Hospital, Jeonbuk National University Medical School, Jeonju, Korea
– name: 10 Department of Ophthalmology, Pusan National University School of Medicine, Busan, Korea
– name: 13 Department of Ophthalmology, Haeundae Paik Hospital, Inje University College of Medicine, Busan, Korea
– name: 7 Department of Ophthalmology, Asan Medical Center, University of Ulsan College of Medicine, Seoul, Korea
– name: 15 Department of Ophthalmology, Seoul National University Bundang Hospital, Seoul National University College of Medicine, Seongnam, Korea
– name: 12 Institute of Vision Research, Department of Ophthalmology, Yonsei University College of Medicine, Seoul, Korea
– name: 17 Department of Ophthalmology, Kyungpook National University Hospital, Kyungpook National University School of Medicine, Daegu, Korea
– name: 1 Department of Ophthalmology, Kangbuk Samsung Hospital, Sungkyunkwan University School of Medicine, Seoul, Korea
– name: 5 Department of Ophthalmology, Seoul National University Hospital, Seoul National University College of Medicine, Seoul, Korea
– name: 18 Department of Ophthalmology, Korea University College of Medicine, Seoul, Korea
– name: 4 Department of Ophthalmology, St. Vincent’s Hospital, The Catholic University of Korea College of Medicine, Suwon, Korea
– name: 9 Department of Ophthalmology, Chosun University School of Medicine, Gwangju, Korea
– name: 19 Division of Health and Nutrition Survey and Analysis, Korea Disease Control and Prevention Agency, Cheongju, Korea
Author_xml – sequence: 1
  givenname: Su Jeong
  surname: Song
  fullname: Song, Su Jeong
– sequence: 2
  givenname: Kyung Seek
  surname: Choi
  fullname: Choi, Kyung Seek
– sequence: 3
  givenname: Jong Chul
  surname: Han
  fullname: Han, Jong Chul
– sequence: 4
  givenname: Donghyun
  surname: Jee
  fullname: Jee, Donghyun
– sequence: 5
  givenname: Jin Wook
  surname: Jeoung
  fullname: Jeoung, Jin Wook
– sequence: 6
  givenname: Young Joon
  surname: Jo
  fullname: Jo, Young Joon
– sequence: 7
  givenname: Jae Yong
  surname: Kim
  fullname: Kim, Jae Yong
– sequence: 8
  givenname: Ko Eun
  surname: Kim
  fullname: Kim, Ko Eun
– sequence: 9
  givenname: Seong Taeck
  surname: Kim
  fullname: Kim, Seong Taeck
– sequence: 10
  givenname: Ji Woong
  surname: Lee
  fullname: Lee, Ji Woong
– sequence: 11
  givenname: Tae Eun
  surname: Lee
  fullname: Lee, Tae Eun
– sequence: 12
  givenname: Dong Hui
  surname: Lim
  fullname: Lim, Dong Hui
– sequence: 13
  givenname: Chan Yun
  surname: Kim
  fullname: Kim, Chan Yun
– sequence: 14
  givenname: Hyun Woong
  surname: Kim
  fullname: Kim, Hyun Woong
– sequence: 15
  givenname: Sang Woo
  surname: Park
  fullname: Park, Sang Woo
– sequence: 16
  givenname: Ki Ho
  surname: Park
  fullname: Park, Ki Ho
– sequence: 17
  givenname: Sang Jun
  surname: Park
  fullname: Park, Sang Jun
– sequence: 18
  givenname: Min
  surname: Sagong
  fullname: Sagong, Min
– sequence: 19
  givenname: Jae Pil
  surname: Shin
  fullname: Shin, Jae Pil
– sequence: 20
  givenname: Chungkwon
  surname: Yoo
  fullname: Yoo, Chungkwon
– sequence: 21
  givenname: Yoonjung
  surname: Kim
  fullname: Kim, Yoonjung
– sequence: 22
  givenname: Kyungwon
  surname: Oh
  fullname: Oh, Kyungwon
– sequence: 23
  givenname: Kyu Hyung
  surname: Park
  fullname: Park, Kyu Hyung
BackLink https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART002743095$$DAccess content in National Research Foundation of Korea (NRF)
BookMark eNp9UUtv1DAQtlAR3RaO3H1sD1n8SmJfkKpqSytKK7XlbDmJs3HXay92snRv_Q-IP8gvwdldiYcEp5FmvtfMHIED550G4C1GU0oZfrd49FOCCJ4ihIsXYEKQIJmgnByACUYYZ1wwcgiOYnxEqMAUla_AYSIWBAs2Ad8_6b7zjbd-voHKNfBO9cY7ZTVsfYC3q67vlF2aGs6e1NK47TRC42DfaXiv19r13ZY4M_OEhR990Are7FXgpVZ2D7gZ-mDG9u9S8H4Ia72J8IQgXP54_jbucvoavGyVjfrNvh6Dzxezh_PL7Pr2w9X52XVWU0yLDDelbmohKlbnWDWE6pK1FaccV4yIAhHeKF5piguM67zUCdKwQuU5a7mqKkSPwelO14VWLmojvTLbOvdyEeTZ3cOVFJyJHOGEne6wg1upzVdlrVwFs1RhIzGS4y9k-oUc88vxF4nwfkdYDdUy5UyXCuoXabT6c-JMl4zXktO8LDBJAid7geC_DDr2cmlira1VTvshSpIzxktB0OhFd9A6-BiDbmVt-u2Bk7Kx_0yY_cX6_0Y_Af9owv0
CitedBy_id crossref_primary_10_1080_09286586_2024_2321902
crossref_primary_10_4082_kjfm_23_0162
crossref_primary_10_1111_ceo_14164
crossref_primary_10_1111_ceo_14340
crossref_primary_10_1167_iovs_65_1_6
crossref_primary_10_1186_s13098_023_01151_5
crossref_primary_10_1080_09286586_2024_2321892
crossref_primary_10_1007_s11517_024_03182_0
crossref_primary_10_1080_09286586_2023_2301583
crossref_primary_10_1186_s12911_025_02950_8
crossref_primary_10_1186_s40942_025_00638_9
Cites_doi 10.5853/jos.2015.17.3.302
10.1167/iovs.14-14909
10.3341/kjo.2011.25.6.421
10.1371/journal.pone.0131427
10.1016/j.ophtha.2014.07.039
10.1167/iovs.12-10345
10.1016/j.diabres.2012.10.011
10.1093/ije/dyt228
10.1371/journal.pone.0114972
10.1371/journal.pone.0132779
10.1016/j.ophtha.2015.11.004
10.1007/s40618-013-0011-3
10.1111/aos.12355
10.1016/j.ophtha.2010.10.016
10.3341/kjo.2015.29.6.359
10.1167/iovs.14-15450
ContentType Journal Article
Copyright 2021 The Korean Ophthalmological Society 2021
Copyright_xml – notice: 2021 The Korean Ophthalmological Society 2021
DBID AAYXX
CITATION
7X8
5PM
ADTOC
UNPAY
ACYCR
DOI 10.3341/kjo.2021.0016
DatabaseName CrossRef
MEDLINE - Academic
PubMed Central (Full Participant titles)
Unpaywall for CDI: Periodical Content
Unpaywall
Korean Citation Index
DatabaseTitle CrossRef
MEDLINE - Academic
DatabaseTitleList CrossRef


MEDLINE - Academic
Database_xml – sequence: 1
  dbid: UNPAY
  name: Unpaywall
  url: https://proxy.k.utb.cz/login?url=https://unpaywall.org/
  sourceTypes: Open Access Repository
DeliveryMethod fulltext_linktorsrc
Discipline Medicine
EISSN 2092-9382
EndPage 303
ExternalDocumentID oai_kci_go_kr_ARTI_9849501
10.3341/kjo.2021.0016
PMC8357612
10_3341_kjo_2021_0016
GroupedDBID ---
29L
2WC
5-W
5GY
85H
8JR
8XY
9ZL
AAYXX
ACYCR
ADBBV
ALMA_UNASSIGNED_HOLDINGS
AOIJS
BAWUL
CITATION
CS3
DIK
E3Z
EBS
EF.
EJD
F5P
FRP
GROUPED_DOAJ
GX1
HYE
KQ8
M48
O5R
O5S
OK1
P5Y
P6G
PGMZT
RPM
TR2
7X8
5PM
53G
ADRAZ
ADTOC
MZR
UNPAY
ZZE
HZB
M~E
ID FETCH-LOGICAL-c3136-1d7edc99b4c51ad23e74fb8381b4296028da8be31611c57ead2d46a554f8abb03
IEDL.DBID UNPAY
ISSN 1011-8942
2092-9382
IngestDate Tue Nov 21 21:39:34 EST 2023
Sun Oct 26 02:59:25 EDT 2025
Tue Sep 30 16:50:52 EDT 2025
Wed Oct 01 14:42:52 EDT 2025
Wed Oct 01 03:36:25 EDT 2025
Thu Apr 24 23:06:34 EDT 2025
IsDoiOpenAccess true
IsOpenAccess true
IsPeerReviewed true
IsScholarly true
Issue 4
Language English
License This is an Open Access article distributed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted non-commercial use, distribution, and reproduction in any medium, provided the original work is properly cited.
cc-by-nc
LinkModel DirectLink
MergedId FETCHMERGED-LOGICAL-c3136-1d7edc99b4c51ad23e74fb8381b4296028da8be31611c57ead2d46a554f8abb03
Notes ObjectType-Article-1
SourceType-Scholarly Journals-1
ObjectType-Feature-2
content type line 23
OpenAccessLink https://proxy.k.utb.cz/login?url=https://www.ekjo.org/upload/pdf/kjo-2021-0016.pdf
PMID 34162194
PQID 2544879206
PQPubID 23479
PageCount 9
ParticipantIDs nrf_kci_oai_kci_go_kr_ARTI_9849501
unpaywall_primary_10_3341_kjo_2021_0016
pubmedcentral_primary_oai_pubmedcentral_nih_gov_8357612
proquest_miscellaneous_2544879206
crossref_citationtrail_10_3341_kjo_2021_0016
crossref_primary_10_3341_kjo_2021_0016
ProviderPackageCode CITATION
AAYXX
PublicationCentury 2000
PublicationDate 2021-08-01
PublicationDateYYYYMMDD 2021-08-01
PublicationDate_xml – month: 08
  year: 2021
  text: 2021-08-01
  day: 01
PublicationDecade 2020
PublicationTitle Korean journal of ophthalmology
PublicationYear 2021
Publisher Korean Ophthalmological Society
대한안과학회
Publisher_xml – name: Korean Ophthalmological Society
– name: 대한안과학회
References ref13
ref12
ref15
ref14
ref11
ref10
ref2
ref1
ref19
ref18
ref8
(ref17) 1991
ref7
ref4
ref3
ref6
Cho (ref9) 2015
ref5
Bird (ref16) 1995
References_xml – ident: ref4
  doi: 10.5853/jos.2015.17.3.302
– ident: ref8
  doi: 10.1167/iovs.14-14909
– ident: ref7
  doi: 10.3341/kjo.2011.25.6.421
– ident: ref13
  doi: 10.1371/journal.pone.0131427
– start-page: 367
  volume-title: An international classification and grading system for age-related maculopathy and age-related macular degeneration. The International ARM Epidemiological Study Group
  year: 1995
  ident: ref16
– start-page: 4375
  volume-title: Visual impairment of Korean population: prevalence and impact on mental health
  year: 2015
  ident: ref9
– ident: ref10
  doi: 10.1016/j.ophtha.2014.07.039
– ident: ref15
  doi: 10.1167/iovs.12-10345
– ident: ref2
  doi: 10.1016/j.diabres.2012.10.011
– start-page: 786
  volume-title: Grading diabetic retinopathy from stereoscopic color fundus photographs: an extension of the modified Airlie House classification. ETDRS report number 10. Early Treatment Diabetic Retinopathy Study Research Group
  year: 1991
  ident: ref17
– ident: ref1
  doi: 10.1093/ije/dyt228
– ident: ref5
  doi: 10.1371/journal.pone.0114972
– ident: ref11
  doi: 10.1371/journal.pone.0132779
– ident: ref18
  doi: 10.1016/j.ophtha.2015.11.004
– ident: ref3
  doi: 10.1007/s40618-013-0011-3
– ident: ref12
  doi: 10.1111/aos.12355
– ident: ref19
  doi: 10.1016/j.ophtha.2010.10.016
– ident: ref6
  doi: 10.3341/kjo.2015.29.6.359
– ident: ref14
  doi: 10.1167/iovs.14-15450
SSID ssj0061307
Score 2.2708893
SecondaryResourceType review_article
Snippet This report provides a detailed description of the methodology for ophthalmic examinations according to the Korea National Health and Nutrition Examination...
This report provides a detailed description of the methodology for ophthalmic examinations according to the Korea NationalHealth and Nutrition Examination...
SourceID nrf
unpaywall
pubmedcentral
proquest
crossref
SourceType Open Website
Open Access Repository
Aggregation Database
Enrichment Source
Index Database
StartPage 295
SubjectTerms Special
안과학
SummonAdditionalLinks – databaseName: Scholars Portal Journals: Open Access
  dbid: M48
  link: http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwnV1Zj9MwELbYRVr2BXGKcskgxCERiBMnjh8QQqirBdRFYqm0b5aPhJYGt2Rb2H3jPyD-IL-EGSctW64HXhIpcWzHM_Z84-MbQu44JjQrtIwq55KI26yKZKnjSFsBw2XGHIvxNPJgL98d8pcH2cFPSqGuAQ__6NphPKlhUz86-nj8FDr8E_Q4YRB-PHmPp_gShqsK-QY5DUZKYhSHAV8tKCBKDnFWcEawkDxp6TZ__3ybbMGzHPoxX7NUG76p1kDor1sozyz8TB9_1nV9wj7tnCNnO2BJn7WacJ6cKv0FsjXols4vkm-DECs6zKJT7R19000DlhRwK309G81Huv4wtrR_pHF_TFBIOvYUICLdD0RPo_BhP0ym0ldTwJu049WuaXueKSTYWzL8n8yK7i-aT6A29D6AAfH9y1dsjAeXyHCn__b5btTFZIhsytI8Yk7AT0tpQKxMuyQtBa9MAXbfgGXLAa04XZgyBSDJbCZATxPHcw2gpSq0MXF6mWz6qS-vEMpTLS3YaIxhCcOIhavONDeVAdSYFVWPPFy2v7IdYTnGzagVOC4oOQWSU1hZ3JiX98jdVfJZy9Txt4S3QZhqYscKubXx_m6qJo0CD-KFglrILGY9cmspawUdDldRtC-ni0OFnG6FkEkMGYk1JVgVi9muv_HjUaDuBrwrAFP2yL2Vuvy7slf_u4xrZBtzaTcrXieb82ZR3gAANTc3Q9f4AYulG7Q
  priority: 102
  providerName: Scholars Portal
Title Methodology and Rationale for Ophthalmic Examinations in the Seventh and Eighth Korea National Health and Nutrition Examination Surveys (2017–2021)
URI https://www.proquest.com/docview/2544879206
https://pubmed.ncbi.nlm.nih.gov/PMC8357612
https://www.ekjo.org/upload/pdf/kjo-2021-0016.pdf
https://www.kci.go.kr/kciportal/ci/sereArticleSearch/ciSereArtiView.kci?sereArticleSearchBean.artiId=ART002743095
UnpaywallVersion publishedVersion
Volume 35
hasFullText 1
inHoldings 1
isFullTextHit
isPrint
ispartofPNX Korean Journal of Ophthalmology, 2021, 35(4), , pp.295-303
journalDatabaseRights – providerCode: PRVAFT
  databaseName: Open Access Digital Library
  customDbUrl:
  eissn: 2092-9382
  dateEnd: 99991231
  omitProxy: true
  ssIdentifier: ssj0061307
  issn: 1011-8942
  databaseCode: KQ8
  dateStart: 20060101
  isFulltext: true
  titleUrlDefault: http://grweb.coalliance.org/oadl/oadl.html
  providerName: Colorado Alliance of Research Libraries
– providerCode: PRVAON
  databaseName: DOAJ Directory of Open Access Journals
  customDbUrl:
  eissn: 2092-9382
  dateEnd: 99991231
  omitProxy: true
  ssIdentifier: ssj0061307
  issn: 1011-8942
  databaseCode: DOA
  dateStart: 20060101
  isFulltext: true
  titleUrlDefault: https://www.doaj.org/
  providerName: Directory of Open Access Journals
– providerCode: PRVBFR
  databaseName: Free Medical Journals
  customDbUrl:
  eissn: 2092-9382
  dateEnd: 20251005
  omitProxy: true
  ssIdentifier: ssj0061307
  issn: 1011-8942
  databaseCode: DIK
  dateStart: 20070101
  isFulltext: true
  titleUrlDefault: http://www.freemedicaljournals.com
  providerName: Flying Publisher
– providerCode: PRVFQY
  databaseName: GFMER Free Medical Journals
  customDbUrl:
  eissn: 2092-9382
  dateEnd: 99991231
  omitProxy: true
  ssIdentifier: ssj0061307
  issn: 1011-8942
  databaseCode: GX1
  dateStart: 0
  isFulltext: true
  titleUrlDefault: http://www.gfmer.ch/Medical_journals/Free_medical.php
  providerName: Geneva Foundation for Medical Education and Research
– providerCode: PRVERR
  databaseName: KoreaMed Open Access
  customDbUrl:
  eissn: 2092-9382
  dateEnd: 99991231
  omitProxy: true
  ssIdentifier: ssj0061307
  issn: 1011-8942
  databaseCode: 5-W
  dateStart: 19870101
  isFulltext: true
  titleUrlDefault: https://koreamed.org/journals
  providerName: Korean Association of Medical Journal Editors
– providerCode: PRVAQN
  databaseName: PubMed Central
  customDbUrl:
  eissn: 2092-9382
  dateEnd: 99991231
  omitProxy: true
  ssIdentifier: ssj0061307
  issn: 1011-8942
  databaseCode: RPM
  dateStart: 20060101
  isFulltext: true
  titleUrlDefault: https://www.ncbi.nlm.nih.gov/pmc/
  providerName: National Library of Medicine
– providerCode: PRVFZP
  databaseName: Scholars Portal Journals: Open Access
  customDbUrl:
  eissn: 2092-9382
  dateEnd: 20250630
  omitProxy: true
  ssIdentifier: ssj0061307
  issn: 1011-8942
  databaseCode: M48
  dateStart: 20060301
  isFulltext: true
  titleUrlDefault: http://journals.scholarsportal.info
  providerName: Scholars Portal
link http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwlV1bb9MwFD7aOgl42biKwpgMQlwk0sW5-3FCnQaoBW1UGk-WLwktDUnUNdye-A-IP8gv4dhJqnUSCF4SKXFOnOSL_dnn-DsADzWNBU0EczKtPSdQYeawVLiOUDE2lyHV1DWrkUfj6GgSvDwNTzeAdmthbFjl_ENpnfh1lZdC71c628dD-EE9HPoiRxngkU3YikKk3z3YmozfHLyzXk1KnYTZhDmeyzyH-YnX6Gr62FgbGwNjw3gforV-aLNYZGsU82KA5OW6qMTXzyLPz_U-hztw3NW7CTqZD-qlHKhvFyQd_-vBrsJ2y0XJQQOea7CRFtfh0qj1tt-AnyObXtpOvBNRaHLczhymBKkueV1Nl1ORf5wpMvwiTEiNxTCZFQRZJTmx2lBTe-HQzr-SVyVSVNJKceekWQJlC4y7pADnTZGTevEJkUaeIH-If33_YZ7g6U2YHA7fPj9y2jQOjvKpHzlUx_gmGZOIBCq056dxkMkEqYLEzjBCgqNFIlMfuSdVYYzQ9nQQCeQ5WSKkdP1b0CvKIr0NJPAFU9itm7SX2PIo3IpQBDKTSDTDJOvDs-6jctVqnJtUGznHsY7BAMfXzU1lTSxf1IdHq-JVI-7xp4IPECF8rmbcyHGb_fuSzxccBx0vONaChS7tw_0OQBz_UeN4EUVa1mfcyMAlMfNcNBSvIWt1W2N2_Uwxm1q1b6TIMdLQPjxeYfDvlb3zzyXvwpUGeiaecRd6y0Wd3kOOtZR7dm4Ct6Mg2Wv_sN9j0Sjj
linkProvider Unpaywall
linkToUnpaywall http://utb.summon.serialssolutions.com/2.0.0/link/0/eLvHCXMwlV1bb9MwFD7aOgl4gXEThTEZhLhISxfn7scJdRqgFrRRaTxZviS0NCRRaWDwxH9A_EF-CcdOUq2TQPCSSIlz4iRf7M8-x98BeKRpLGgimJNp7TmBCjOHpcJ1hIqxuQyppq5ZjTwaR0eT4OVpeLoBtFsLY8Mq5x9K68Svq7wUer_S2T4ewg_q4dAXOcoAj2zCVhQi_e7B1mT85uCd9WpS6iTMJszxXOY5zE-8RlfTx8ba2BgYG8b7EK31Q5vFIlujmBcDJC_XRSW-fhF5fq73ObwGx129m6CT-aBeyoH6dkHS8b8ebBuutlyUHDTguQ4baXEDLo1ab_tN-Dmy6aXtxDsRhSbH7cxhSpDqktfVdDkV-ceZIsMzYUJqLIbJrCDIKsmJ1Yaa2guHdv6VvCqRopJWijsnzRIoW2DcJQU4b4qc1IvPiDTyFPlD_Ov7D_MEz27B5HD49vmR06ZxcJRP_cihOsY3yZhEJFChPT-Ng0wmSBUkdoYREhwtEpn6yD2pCmOEtqeDSCDPyRIhpevfhl5RFukdIIEvmMJu3aS9xJZH4VaEIpCZRKIZJlkf9rqPylWrcW5SbeQcxzoGAxxfNzeVNbF8UR8er4pXjbjHnwo-RITwuZpxI8dt9u9LPl9wHHS84FgLFrq0Dw86AHH8R43jRRRpWX_iRgYuiZnnoqF4DVmr2xqz62eK2dSqfSNFjpGG9uHJCoN_r-zdfy55D6400DPxjDvQWy7q9D5yrKXcbf-q34obJxQ
openUrl ctx_ver=Z39.88-2004&ctx_enc=info%3Aofi%2Fenc%3AUTF-8&rfr_id=info%3Asid%2Fsummon.serialssolutions.com&rft_val_fmt=info%3Aofi%2Ffmt%3Akev%3Amtx%3Ajournal&rft.genre=article&rft.atitle=Methodology+and+Rationale+for+Ophthalmic+Examinations+in+the+Seventh+and+Eighth+Korea+National+Health+and+Nutrition+Examination+Surveys+%282017%E2%80%932021%29&rft.jtitle=Korean+journal+of+ophthalmology&rft.au=Song%2C+Su+Jeong&rft.au=Choi%2C+Kyung+Seek&rft.au=Han%2C+Jong+Chul&rft.au=Jee%2C+Donghyun&rft.date=2021-08-01&rft.pub=Korean+Ophthalmological+Society&rft.issn=1011-8942&rft.eissn=2092-9382&rft.volume=35&rft.issue=4&rft.spage=295&rft.epage=303&rft_id=info:doi/10.3341%2Fkjo.2021.0016&rft_id=info%3Apmid%2F34162194&rft.externalDocID=PMC8357612
thumbnail_l http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/lc.gif&issn=1011-8942&client=summon
thumbnail_m http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/mc.gif&issn=1011-8942&client=summon
thumbnail_s http://covers-cdn.summon.serialssolutions.com/index.aspx?isbn=/sc.gif&issn=1011-8942&client=summon